Influence of S Contents on the Hydrogen Blistering and Hydrogen Induced Cracking of A350LF2 Steel
Shu-qi Zheng, Chang-feng Chen, Li-qiang Chen
DOI: 10.4236/msa.2011.27122   PDF   HTML     6,435 Downloads   10,136 Views   Citations


In the present work, the effects of chemical compositions on the hydrogen blistering and hydrogen induced cracking of A350LF2 steel with different S contents were studied. Four types of A350LF2 steels were evaluated by immersing samples in H2S-saturated NACE solution. The hydrogen blistering, crack length rate(CLR), crack thickness rate(CTR) and crack sensitivity rate(CSR) were evaluated. The results show that there are many hydrogen blisters on the sample surface with S content of 0.021%, a few on the sample surface with S content of 0.019% and 0.012% and no one on the surface with S content of 0.002%. There were 12, 2 and 1 strips of cracks of longer than 0.3 mm on the evaluated cross sections with S content of 0.021%, 0.019% and 0.012%, respectively. There was no any crack in the sample with 0.002% S. The corrosion rate was also evaluated. The S content has no obvious influence on the corrosion rate.

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S. Zheng, C. Chen and L. Chen, "Influence of S Contents on the Hydrogen Blistering and Hydrogen Induced Cracking of A350LF2 Steel," Materials Sciences and Applications, Vol. 2 No. 7, 2011, pp. 917-921. doi: 10.4236/msa.2011.27122.

Conflicts of Interest

The authors declare no conflicts of interest.


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